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A Curious Ritual on the Pitch
Players at the 2026 FIFA World Cup are seen with socks cut open at the calf, a practice rooted in discomfort rather than proven performance gains.
At the 2026 FIFA World Cup, a recurring sight has captured attention: players taking the field with holes cut into the calves of their socks. Social media buzzes with theories of competitive advantage, but the practice is far from new. It has appeared at the European Championships, Olympic Games, and other international competitions over the past decade. Yet, science has yet to find evidence that it improves performance.
Professional soccer socks are designed to be form-fitting. They hold shin guards in place, provide support to the ankle, arch, and calf, manage moisture, and reduce foot movement inside the cleat for stability. This design has been used for decades, with materials evolving from traditional fibers to lightweight, durable synthetics like polyester, nylon, and spandex. Despite these advances, many players complain that the socks are too tight, causing tingling or numbness in the calf area. The discomfort is so significant that some cut several holes in the calf region during a game to “release tension” and run better.
The Biomechanics Behind the Sensation
Muscle expansion during play may explain why some players feel restricted, even with modern sock technology.
There is a biomechanical component to this sensation. During a sprint or a change of direction, the largest muscle in the calf contracts and increases in thickness to generate propulsive force. This change in shape occurs thousands of times during a game. For some players, the repeated expansion of the muscle creates a sensation of pressure when the sock exerts constant compression on the calf.
Over time, the practice of cutting holes has taken on an intuitive explanation among players: splitting the fabric allows the muscle to “breathe,” relieving pressure and reducing the risk of pain or cramps. However, specialists in sports medicine and recovery point out that no studies demonstrate any benefit from cutting socks. In fact, research on compression garments suggests that properly designed and fitted socks can help limit muscle inflammation after intense exertion. The rules of soccer do not prohibit modifying socks, as long as equipment remains safe and shin guards are properly covered. (A torn jersey, however, is not allowed.)
Psychology Over Physiology
The practice persists despite a lack of evidence, likely driven by player perception and comfort.
Given the lack of scientific evidence, many specialists believe the phenomenon is partly explained by each player’s perception of comfort. In high-performance sports, the feeling of comfort can influence an athlete’s confidence. If a player believes a piece of clothing is restrictive, eliminating that perceived discomfort can make them feel freer to run, accelerate, or change direction—even if their performance remains objectively unchanged.
Though there is no evidence that cutting socks provides a competitive advantage or reduces injury risk, the sensation of discomfort is not imaginary. The perception of pressure, restriction, or comfort depends on multiple factors, including anatomy, individual sensitivity, and past experiences. Two players may react differently while wearing identical equipment. For now, the cutting of socks will likely continue. The available evidence points to a mechanism similar to other sports rituals: its effect is primarily psychological, not necessarily physiological.
This practice highlights how personal experience and belief can shape behavior in elite sports, even when science offers no clear support. As the 2026 World Cup progresses, the sight of modified socks may remain a curious but enduring part of the game.
Based on reporting from wired.com
